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free cor_conn_src_sock_extradata
[cor.git] / net / mac80211 / debugfs.c
blobad41d74530c6ca38b1f51e1f6ceb80979beafb0e
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * mac80211 debugfs for wireless PHYs
4 *
5 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
6 * Copyright 2013-2014 Intel Mobile Communications GmbH
7 * Copyright (C) 2018 - 2019 Intel Corporation
8 */
9
10 #include <linux/debugfs.h>
11 #include <linux/rtnetlink.h>
12 #include <linux/vmalloc.h>
13 #include "ieee80211_i.h"
14 #include "driver-ops.h"
15 #include "rate.h"
16 #include "debugfs.h"
17
18 #define DEBUGFS_FORMAT_BUFFER_SIZE 100
19
20 int mac80211_format_buffer(char __user *userbuf, size_t count,
21 loff_t *ppos, char *fmt, ...)
22 {
23 va_list args;
24 char buf[DEBUGFS_FORMAT_BUFFER_SIZE];
25 int res;
26
27 va_start(args, fmt);
28 res = vscnprintf(buf, sizeof(buf), fmt, args);
29 va_end(args);
30
31 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
32 }
33
34 #define DEBUGFS_READONLY_FILE_FN(name, fmt, value...) \
35 static ssize_t name## _read(struct file *file, char __user *userbuf, \
36 size_t count, loff_t *ppos) \
37 { \
38 struct ieee80211_local *local = file->private_data; \
39 \
40 return mac80211_format_buffer(userbuf, count, ppos, \
41 fmt "\n", ##value); \
42 }
43
44 #define DEBUGFS_READONLY_FILE_OPS(name) \
45 static const struct file_operations name## _ops = { \
46 .read = name## _read, \
47 .open = simple_open, \
48 .llseek = generic_file_llseek, \
49 };
50
51 #define DEBUGFS_READONLY_FILE(name, fmt, value...) \
52 DEBUGFS_READONLY_FILE_FN(name, fmt, value) \
53 DEBUGFS_READONLY_FILE_OPS(name)
54
55 #define DEBUGFS_ADD(name) \
56 debugfs_create_file(#name, 0400, phyd, local, &name## _ops);
57
58 #define DEBUGFS_ADD_MODE(name, mode) \
59 debugfs_create_file(#name, mode, phyd, local, &name## _ops);
60
61
62 DEBUGFS_READONLY_FILE(hw_conf, "%x",
63 local->hw.conf.flags);
64 DEBUGFS_READONLY_FILE(user_power, "%d",
65 local->user_power_level);
66 DEBUGFS_READONLY_FILE(power, "%d",
67 local->hw.conf.power_level);
68 DEBUGFS_READONLY_FILE(total_ps_buffered, "%d",
69 local->total_ps_buffered);
70 DEBUGFS_READONLY_FILE(wep_iv, "%#08x",
71 local->wep_iv & 0xffffff);
72 DEBUGFS_READONLY_FILE(rate_ctrl_alg, "%s",
73 local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver");
74
75 static ssize_t aqm_read(struct file *file,
76 char __user *user_buf,
77 size_t count,
78 loff_t *ppos)
79 {
80 struct ieee80211_local *local = file->private_data;
81 struct fq *fq = &local->fq;
82 char buf[200];
83 int len = 0;
84
85 spin_lock_bh(&local->fq.lock);
86 rcu_read_lock();
87
88 len = scnprintf(buf, sizeof(buf),
89 "access name value\n"
90 "R fq_flows_cnt %u\n"
91 "R fq_backlog %u\n"
92 "R fq_overlimit %u\n"
93 "R fq_overmemory %u\n"
94 "R fq_collisions %u\n"
95 "R fq_memory_usage %u\n"
96 "RW fq_memory_limit %u\n"
97 "RW fq_limit %u\n"
98 "RW fq_quantum %u\n",
99 fq->flows_cnt,
100 fq->backlog,
101 fq->overmemory,
102 fq->overlimit,
103 fq->collisions,
104 fq->memory_usage,
105 fq->memory_limit,
106 fq->limit,
107 fq->quantum);
108
109 rcu_read_unlock();
110 spin_unlock_bh(&local->fq.lock);
111
112 return simple_read_from_buffer(user_buf, count, ppos,
113 buf, len);
114 }
115
116 static ssize_t aqm_write(struct file *file,
117 const char __user *user_buf,
118 size_t count,
119 loff_t *ppos)
120 {
121 struct ieee80211_local *local = file->private_data;
122 char buf[100];
123 size_t len;
124
125 if (count > sizeof(buf))
126 return -EINVAL;
127
128 if (copy_from_user(buf, user_buf, count))
129 return -EFAULT;
130
131 buf[sizeof(buf) - 1] = '\0';
132 len = strlen(buf);
133 if (len > 0 && buf[len-1] == '\n')
134 buf[len-1] = 0;
135
136 if (sscanf(buf, "fq_limit %u", &local->fq.limit) == 1)
137 return count;
138 else if (sscanf(buf, "fq_memory_limit %u", &local->fq.memory_limit) == 1)
139 return count;
140 else if (sscanf(buf, "fq_quantum %u", &local->fq.quantum) == 1)
141 return count;
142
143 return -EINVAL;
144 }
145
146 static const struct file_operations aqm_ops = {
147 .write = aqm_write,
148 .read = aqm_read,
149 .open = simple_open,
150 .llseek = default_llseek,
151 };
152
153 static ssize_t aql_txq_limit_read(struct file *file,
154 char __user *user_buf,
155 size_t count,
156 loff_t *ppos)
157 {
158 struct ieee80211_local *local = file->private_data;
159 char buf[400];
160 int len = 0;
161
162 len = scnprintf(buf, sizeof(buf),
163 "AC AQL limit low AQL limit high\n"
164 "VO %u %u\n"
165 "VI %u %u\n"
166 "BE %u %u\n"
167 "BK %u %u\n",
168 local->aql_txq_limit_low[IEEE80211_AC_VO],
169 local->aql_txq_limit_high[IEEE80211_AC_VO],
170 local->aql_txq_limit_low[IEEE80211_AC_VI],
171 local->aql_txq_limit_high[IEEE80211_AC_VI],
172 local->aql_txq_limit_low[IEEE80211_AC_BE],
173 local->aql_txq_limit_high[IEEE80211_AC_BE],
174 local->aql_txq_limit_low[IEEE80211_AC_BK],
175 local->aql_txq_limit_high[IEEE80211_AC_BK]);
176 return simple_read_from_buffer(user_buf, count, ppos,
177 buf, len);
178 }
179
180 static ssize_t aql_txq_limit_write(struct file *file,
181 const char __user *user_buf,
182 size_t count,
183 loff_t *ppos)
184 {
185 struct ieee80211_local *local = file->private_data;
186 char buf[100];
187 size_t len;
188 u32 ac, q_limit_low, q_limit_high, q_limit_low_old, q_limit_high_old;
189 struct sta_info *sta;
190
191 if (count > sizeof(buf))
192 return -EINVAL;
193
194 if (copy_from_user(buf, user_buf, count))
195 return -EFAULT;
196
197 buf[sizeof(buf) - 1] = 0;
198 len = strlen(buf);
199 if (len > 0 && buf[len - 1] == '\n')
200 buf[len - 1] = 0;
201
202 if (sscanf(buf, "%u %u %u", &ac, &q_limit_low, &q_limit_high) != 3)
203 return -EINVAL;
204
205 if (ac >= IEEE80211_NUM_ACS)
206 return -EINVAL;
207
208 q_limit_low_old = local->aql_txq_limit_low[ac];
209 q_limit_high_old = local->aql_txq_limit_high[ac];
210
211 local->aql_txq_limit_low[ac] = q_limit_low;
212 local->aql_txq_limit_high[ac] = q_limit_high;
213
214 mutex_lock(&local->sta_mtx);
215 list_for_each_entry(sta, &local->sta_list, list) {
216 /* If a sta has customized queue limits, keep it */
217 if (sta->airtime[ac].aql_limit_low == q_limit_low_old &&
218 sta->airtime[ac].aql_limit_high == q_limit_high_old) {
219 sta->airtime[ac].aql_limit_low = q_limit_low;
220 sta->airtime[ac].aql_limit_high = q_limit_high;
221 }
222 }
223 mutex_unlock(&local->sta_mtx);
224 return count;
225 }
226
227 static const struct file_operations aql_txq_limit_ops = {
228 .write = aql_txq_limit_write,
229 .read = aql_txq_limit_read,
230 .open = simple_open,
231 .llseek = default_llseek,
232 };
233
234 static ssize_t force_tx_status_read(struct file *file,
235 char __user *user_buf,
236 size_t count,
237 loff_t *ppos)
238 {
239 struct ieee80211_local *local = file->private_data;
240 char buf[3];
241 int len = 0;
242
243 len = scnprintf(buf, sizeof(buf), "%d\n", (int)local->force_tx_status);
244
245 return simple_read_from_buffer(user_buf, count, ppos,
246 buf, len);
247 }
248
249 static ssize_t force_tx_status_write(struct file *file,
250 const char __user *user_buf,
251 size_t count,
252 loff_t *ppos)
253 {
254 struct ieee80211_local *local = file->private_data;
255 char buf[3];
256 size_t len;
257
258 if (count > sizeof(buf))
259 return -EINVAL;
260
261 if (copy_from_user(buf, user_buf, count))
262 return -EFAULT;
263
264 buf[sizeof(buf) - 1] = '\0';
265 len = strlen(buf);
266 if (len > 0 && buf[len - 1] == '\n')
267 buf[len - 1] = 0;
268
269 if (buf[0] == '0' && buf[1] == '\0')
270 local->force_tx_status = 0;
271 else if (buf[0] == '1' && buf[1] == '\0')
272 local->force_tx_status = 1;
273 else
274 return -EINVAL;
275
276 return count;
277 }
278
279 static const struct file_operations force_tx_status_ops = {
280 .write = force_tx_status_write,
281 .read = force_tx_status_read,
282 .open = simple_open,
283 .llseek = default_llseek,
284 };
285
286 #ifdef CONFIG_PM
287 static ssize_t reset_write(struct file *file, const char __user *user_buf,
288 size_t count, loff_t *ppos)
289 {
290 struct ieee80211_local *local = file->private_data;
291
292 rtnl_lock();
293 __ieee80211_suspend(&local->hw, NULL);
294 __ieee80211_resume(&local->hw);
295 rtnl_unlock();
296
297 return count;
298 }
299
300 static const struct file_operations reset_ops = {
301 .write = reset_write,
302 .open = simple_open,
303 .llseek = noop_llseek,
304 };
305 #endif
306
307 static const char *hw_flag_names[] = {
308 #define FLAG(F) [IEEE80211_HW_##F] = #F
309 FLAG(HAS_RATE_CONTROL),
310 FLAG(RX_INCLUDES_FCS),
311 FLAG(HOST_BROADCAST_PS_BUFFERING),
312 FLAG(SIGNAL_UNSPEC),
313 FLAG(SIGNAL_DBM),
314 FLAG(NEED_DTIM_BEFORE_ASSOC),
315 FLAG(SPECTRUM_MGMT),
316 FLAG(AMPDU_AGGREGATION),
317 FLAG(SUPPORTS_PS),
318 FLAG(PS_NULLFUNC_STACK),
319 FLAG(SUPPORTS_DYNAMIC_PS),
320 FLAG(MFP_CAPABLE),
321 FLAG(WANT_MONITOR_VIF),
322 FLAG(NO_AUTO_VIF),
323 FLAG(SW_CRYPTO_CONTROL),
324 FLAG(SUPPORT_FAST_XMIT),
325 FLAG(REPORTS_TX_ACK_STATUS),
326 FLAG(CONNECTION_MONITOR),
327 FLAG(QUEUE_CONTROL),
328 FLAG(SUPPORTS_PER_STA_GTK),
329 FLAG(AP_LINK_PS),
330 FLAG(TX_AMPDU_SETUP_IN_HW),
331 FLAG(SUPPORTS_RC_TABLE),
332 FLAG(P2P_DEV_ADDR_FOR_INTF),
333 FLAG(TIMING_BEACON_ONLY),
334 FLAG(SUPPORTS_HT_CCK_RATES),
335 FLAG(CHANCTX_STA_CSA),
336 FLAG(SUPPORTS_CLONED_SKBS),
337 FLAG(SINGLE_SCAN_ON_ALL_BANDS),
338 FLAG(TDLS_WIDER_BW),
339 FLAG(SUPPORTS_AMSDU_IN_AMPDU),
340 FLAG(BEACON_TX_STATUS),
341 FLAG(NEEDS_UNIQUE_STA_ADDR),
342 FLAG(SUPPORTS_REORDERING_BUFFER),
343 FLAG(USES_RSS),
344 FLAG(TX_AMSDU),
345 FLAG(TX_FRAG_LIST),
346 FLAG(REPORTS_LOW_ACK),
347 FLAG(SUPPORTS_TX_FRAG),
348 FLAG(SUPPORTS_TDLS_BUFFER_STA),
349 FLAG(DEAUTH_NEED_MGD_TX_PREP),
350 FLAG(DOESNT_SUPPORT_QOS_NDP),
351 FLAG(BUFF_MMPDU_TXQ),
352 FLAG(SUPPORTS_VHT_EXT_NSS_BW),
353 FLAG(STA_MMPDU_TXQ),
354 FLAG(TX_STATUS_NO_AMPDU_LEN),
355 FLAG(SUPPORTS_MULTI_BSSID),
356 FLAG(SUPPORTS_ONLY_HE_MULTI_BSSID),
357 FLAG(AMPDU_KEYBORDER_SUPPORT),
358 #undef FLAG
359 };
360
361 static ssize_t hwflags_read(struct file *file, char __user *user_buf,
362 size_t count, loff_t *ppos)
363 {
364 struct ieee80211_local *local = file->private_data;
365 size_t bufsz = 30 * NUM_IEEE80211_HW_FLAGS;
366 char *buf = kzalloc(bufsz, GFP_KERNEL);
367 char *pos = buf, *end = buf + bufsz - 1;
368 ssize_t rv;
369 int i;
370
371 if (!buf)
372 return -ENOMEM;
373
374 /* fail compilation if somebody adds or removes
375 * a flag without updating the name array above
376 */
377 BUILD_BUG_ON(ARRAY_SIZE(hw_flag_names) != NUM_IEEE80211_HW_FLAGS);
378
379 for (i = 0; i < NUM_IEEE80211_HW_FLAGS; i++) {
380 if (test_bit(i, local->hw.flags))
381 pos += scnprintf(pos, end - pos, "%s\n",
382 hw_flag_names[i]);
383 }
384
385 rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
386 kfree(buf);
387 return rv;
388 }
389
390 static ssize_t misc_read(struct file *file, char __user *user_buf,
391 size_t count, loff_t *ppos)
392 {
393 struct ieee80211_local *local = file->private_data;
394 /* Max len of each line is 16 characters, plus 9 for 'pending:\n' */
395 size_t bufsz = IEEE80211_MAX_QUEUES * 16 + 9;
396 char *buf;
397 char *pos, *end;
398 ssize_t rv;
399 int i;
400 int ln;
401
402 buf = kzalloc(bufsz, GFP_KERNEL);
403 if (!buf)
404 return -ENOMEM;
405
406 pos = buf;
407 end = buf + bufsz - 1;
408
409 pos += scnprintf(pos, end - pos, "pending:\n");
410
411 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
412 ln = skb_queue_len(&local->pending[i]);
413 pos += scnprintf(pos, end - pos, "[%i] %d\n",
414 i, ln);
415 }
416
417 rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
418 kfree(buf);
419 return rv;
420 }
421
422 static ssize_t queues_read(struct file *file, char __user *user_buf,
423 size_t count, loff_t *ppos)
424 {
425 struct ieee80211_local *local = file->private_data;
426 unsigned long flags;
427 char buf[IEEE80211_MAX_QUEUES * 20];
428 int q, res = 0;
429
430 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
431 for (q = 0; q < local->hw.queues; q++)
432 res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q,
433 local->queue_stop_reasons[q],
434 skb_queue_len(&local->pending[q]));
435 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
436
437 return simple_read_from_buffer(user_buf, count, ppos, buf, res);
438 }
439
440 DEBUGFS_READONLY_FILE_OPS(hwflags);
441 DEBUGFS_READONLY_FILE_OPS(queues);
442 DEBUGFS_READONLY_FILE_OPS(misc);
443
444 /* statistics stuff */
445
446 static ssize_t format_devstat_counter(struct ieee80211_local *local,
447 char __user *userbuf,
448 size_t count, loff_t *ppos,
449 int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf,
450 int buflen))
451 {
452 struct ieee80211_low_level_stats stats;
453 char buf[20];
454 int res;
455
456 rtnl_lock();
457 res = drv_get_stats(local, &stats);
458 rtnl_unlock();
459 if (res)
460 return res;
461 res = printvalue(&stats, buf, sizeof(buf));
462 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
463 }
464
465 #define DEBUGFS_DEVSTATS_FILE(name) \
466 static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
467 char *buf, int buflen) \
468 { \
469 return scnprintf(buf, buflen, "%u\n", stats->name); \
470 } \
471 static ssize_t stats_ ##name## _read(struct file *file, \
472 char __user *userbuf, \
473 size_t count, loff_t *ppos) \
474 { \
475 return format_devstat_counter(file->private_data, \
476 userbuf, \
477 count, \
478 ppos, \
479 print_devstats_##name); \
480 } \
481 \
482 static const struct file_operations stats_ ##name## _ops = { \
483 .read = stats_ ##name## _read, \
484 .open = simple_open, \
485 .llseek = generic_file_llseek, \
486 };
487
488 #define DEBUGFS_STATS_ADD(name) \
489 debugfs_create_u32(#name, 0400, statsd, &local->name);
490 #define DEBUGFS_DEVSTATS_ADD(name) \
491 debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops);
492
493 DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
494 DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
495 DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
496 DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
497
498 void debugfs_hw_add(struct ieee80211_local *local)
499 {
500 struct dentry *phyd = local->hw.wiphy->debugfsdir;
501 struct dentry *statsd;
502
503 if (!phyd)
504 return;
505
506 local->debugfs.keys = debugfs_create_dir("keys", phyd);
507
508 DEBUGFS_ADD(total_ps_buffered);
509 DEBUGFS_ADD(wep_iv);
510 DEBUGFS_ADD(rate_ctrl_alg);
511 DEBUGFS_ADD(queues);
512 DEBUGFS_ADD(misc);
513 #ifdef CONFIG_PM
514 DEBUGFS_ADD_MODE(reset, 0200);
515 #endif
516 DEBUGFS_ADD(hwflags);
517 DEBUGFS_ADD(user_power);
518 DEBUGFS_ADD(power);
519 DEBUGFS_ADD(hw_conf);
520 DEBUGFS_ADD_MODE(force_tx_status, 0600);
521
522 if (local->ops->wake_tx_queue)
523 DEBUGFS_ADD_MODE(aqm, 0600);
524
525 debugfs_create_u16("airtime_flags", 0600,
526 phyd, &local->airtime_flags);
527
528 DEBUGFS_ADD(aql_txq_limit);
529 debugfs_create_u32("aql_threshold", 0600,
530 phyd, &local->aql_threshold);
531
532 statsd = debugfs_create_dir("statistics", phyd);
533
534 /* if the dir failed, don't put all the other things into the root! */
535 if (!statsd)
536 return;
537
538 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
539 DEBUGFS_STATS_ADD(dot11TransmittedFragmentCount);
540 DEBUGFS_STATS_ADD(dot11MulticastTransmittedFrameCount);
541 DEBUGFS_STATS_ADD(dot11FailedCount);
542 DEBUGFS_STATS_ADD(dot11RetryCount);
543 DEBUGFS_STATS_ADD(dot11MultipleRetryCount);
544 DEBUGFS_STATS_ADD(dot11FrameDuplicateCount);
545 DEBUGFS_STATS_ADD(dot11ReceivedFragmentCount);
546 DEBUGFS_STATS_ADD(dot11MulticastReceivedFrameCount);
547 DEBUGFS_STATS_ADD(dot11TransmittedFrameCount);
548 DEBUGFS_STATS_ADD(tx_handlers_drop);
549 DEBUGFS_STATS_ADD(tx_handlers_queued);
550 DEBUGFS_STATS_ADD(tx_handlers_drop_wep);
551 DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc);
552 DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port);
553 DEBUGFS_STATS_ADD(rx_handlers_drop);
554 DEBUGFS_STATS_ADD(rx_handlers_queued);
555 DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc);
556 DEBUGFS_STATS_ADD(rx_handlers_drop_defrag);
557 DEBUGFS_STATS_ADD(tx_expand_skb_head);
558 DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned);
559 DEBUGFS_STATS_ADD(rx_expand_skb_head_defrag);
560 DEBUGFS_STATS_ADD(rx_handlers_fragments);
561 DEBUGFS_STATS_ADD(tx_status_drop);
562 #endif
563 DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount);
564 DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount);
565 DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount);
566 DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount);
567 }
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